Karakterisasi Sifat Optik Lapisan Tipis ZnO doping Al yang di Deposisi diatas Kaca dengan Metode Sol-Gel Teknik Spray-Coating (Halaman 38 s.d. 40)

Durri, Sufwan; Sutanto, Heri

doi:10.22146/jfi.24371

Cited by 4 publications

(4 citation statements)

References 11 publications

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“…III). Aluminum (Al) as a dopant has been reported can increase the surface area of ZnO and increase the efficiency of photocatalytic activity [5]. The addition of the Al as cationic dopants of ZnO can increase the photocatalytic activity compared to ZnO without dopants due to lower particle size, and higher electron mobility [6].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of ZnO-Al:TiO<sub>2 </sub>Materials and their Characterization as Photocatalyst Compounds

Islami,

Ramadhika,

Aprilia

2023

AMM

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Photocatalyst activity relates to the active surface area between pollutants and catalyst compounds. The insertion of Al atoms as a substantial defect in ZnO structures can reduce the particle size thus the active surface area increases. Another way to raise the photocatalytic activity of ZnO is by combination with other oxide materials such as TiO2 (Titanium dioxide). In this study, the ZnO-Al:TiO2 powder was successfully prepared via the sol-gel method using zinc acetate dihydrate as a precursor, 0.5wt% of aluminum nitrate nonahydrate as a dopant precursor, and TiO2 anatase. In order to understand the role of the combination of these two metal oxides, the concentration ratio of ZnO-Al and TiO2 was varied by 1:1 (ZAT) and 4:1 (ZA4T) under low (150°C) and high (450°C) temperature calcination. Photocatalytic testing was carried out using a 3.2 ppm methylene blue (MB) solution under UV-A lamp irradiation for 120 minutes. The high calcination temperature facilitates the growth of ZnO-Al. Besides that, the different ratio concentrations and calcination temperatures produce different defect states in each sample. The most optimum results in the photocatalytic activity performed by ZnO-Al:TiO2 150°C (ZAT 15) with degradation rate constant (k) of 0.033/min and efficiency of 97% for MB removal. The unexpected zinc vacancies defect is estimated produce at the samples in high-temperature calcination. This defect type can accelerate electron-hole pair recombination. In Addition, samples with high-temperature calcination were considered to have lower hydroxyl/oxygen bonds on the surface thus affecting the photocatalytic performance.

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Section: Introductionmentioning

confidence: 99%

Synthesis of ZnO-Al:TiO<sub>2 </sub>Materials and their Characterization as Photocatalyst Compounds

Islami,

Ramadhika,

Aprilia

2023

AMM

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“…Untuk meningkatkan konduktivitas listrik film tipis ZnO dapat didoping dengan material seperti aluminium (Al) (Sugianto et al, 2016;Astuti et al, 2018), Galium (Ga) (Aryanto et al, 2017;Marowot et al, 2016), Magnesium (Mg) (Astuti et al, 2021). Doping Al pada ZnO mampu meningkatkan nilai transmitansi pada daerah cahaya tampak pada kisaran 64 -96%, dan dapat meningkatkan energi celah pita optik (Durri, 2015).…”

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EFEK DAYA PLASMA TERHADAP SIFAT FOTOLUMINESEN FILM TIPIS ZnO DOPING Al

Astuti,

Sugianto,

Maftuchah

et al. 2022

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Film tipis ZnO doping Al (ZnO:Al) dideposisi pada substrat corning glass menggunakan metode DC magnetron sputtering. Proses deposisi film tipis ZnO:Al dijaga konstan pada tekanan Argon, suhu deposisi, dan waktu deposisi masing-masing 500 mTorr, 400 ℃, dan 2 jam. Selanjutnya, proses deposisi film tipis ZnO:Al menggunakan variasi daya plasma yaitu 33, 43, dan 50 watt. Karakterisasi sifat optik film tipis ZnO:Al menggunakan Photoluminescence spektroskopi. Daya plasma yang berbeda dapat mempengaruhi energi ion dan momentum tumbukannya. Perbedaan daya plasma tersebut memiliki efek terhadap kualitas film tipis yang dihasilkan, dimana peningkatan daya plasma menyebabkan kualitas film tipis yang dihasilkan semakin baik.

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“…Logam yang akan digunakan yaitu logam transisi CuO (Tembaga Oksida). Doping merupakan salah satu metode yang efektif untuk mengubah sifat dasar dari fisik dan listrik pada material [9].…”

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Preparasi Poli Tanin Untuk Meningkatkan Efisiensi Dye-Sensitized Solar Cell (DSSC) Preparasi Poli Tanin untuk Meningkatkan Efisiensi Dye-Sensitized Solar Cell (DSSC)

et al. 2022

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DSSC (Dye-Sensitized Solar Cell) is a type of third-generation solar cell based on dye as a photon absorber that has been widely used. In this study, modifications were made to tannin dyes to increase double bonds. Modifications were also carried out on the semiconductor by means of TiO2-CuO doping. TiO2-CuO doping can reduce the energy gap thereby increasing the TiO2 conductivity. The dyes were characterized using FTIR and GC-MS, while the TiO2-CuO doping was characterized using a UV-DRS Spectrophotometer. The results of FTIR characterization of poly tannin dyes have shown specific groups of polymerization of polytannin glutaraldehyde resin. The characterization of TiO2-CuO doping showed a decrease in the energy gap of 3,2 eV to 3,01 eV. The highest efficiency was produced at 90 minutes polymer time with a tannin monomer concentration of 0,4 M of 8,332%.

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Karakterisasi Sifat Optik Lapisan Tipis ZnO doping Al yang di Deposisi diatas Kaca dengan Metode Sol-Gel Teknik Spray-Coating (Halaman 38 s.d. 40)

Cited by 4 publications

References 11 publications

Synthesis of ZnO-Al:TiO<sub>2 </sub>Materials and their Characterization as Photocatalyst Compounds

Synthesis of ZnO-Al:TiO<sub>2 </sub>Materials and their Characterization as Photocatalyst Compounds

EFEK DAYA PLASMA TERHADAP SIFAT FOTOLUMINESEN FILM TIPIS ZnO DOPING Al

Preparasi Poli Tanin Untuk Meningkatkan Efisiensi Dye-Sensitized Solar Cell (DSSC) Preparasi Poli Tanin untuk Meningkatkan Efisiensi Dye-Sensitized Solar Cell (DSSC)

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